M1 15K Oil
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This is a discussion on M1 15K Oil within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Is it ok if I use this oil in my car. I already use the normal M1 synthetic. Also with ...

  1. #1
    Registered User fkarkvan's Avatar
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    M1 15K Oil

    Is it ok if I use this oil in my car. I already use the normal M1 synthetic. Also with this oil is it ok for the car to change every 5K? or even possibly 10K? I know it says 15K but I would change the oil earlier.

    Thanks

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  3. #2
    Resident meany-rator 06wrx4me's Avatar
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    Stick to normal M1. You don't need the Extended performance, and it is not a Subaru approved fluid whereas the normal M1 is.

    Your oil needs to be GF-4/SM

    Mobil 1 Extended Performance contains an extra performance additive to help deliver exceptional performance and protection. This fully synthetic technology is designed specifically for longer service intervals. Appropriate viscosities of Mobil 1 Extended Performance also meet all the requirements for GF-4. Additionally, they exceed the requirements of API SL/CF and various ACEA (European) specifications. (Updated March 2006)
    Read this:
    Oil TSB for 2006+ Subarus

    at bottom:

    Summary:
    Use a GF4/SM oil if you have a 2006 or later Subaru
    change your oil at 3750 miles
    use synthetic if you want

    List of GF-4 (or SM) approved oils:
    Castrol Syntec 5w30
    Redline Synthetic 5w30
    Pennzoil Platinum 5w30
    Mobil1 (classic, non-supersyn) 5w30

    What is NOT GF-4 (or SM) approved?
    -Royal Purple
    -Motul
    -Mobil1 SuperSyn
    2014 Ford Fiesta ST

    06 WRX, HAWKEYE # 001 <T-boned and sold>

    COILOVER TABLE
    TURBO TABLE

  4. #3
    Registered User fkarkvan's Avatar
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    I never knew that, thanks for the info.

  5. #4
    Resident meany-rator 06wrx4me's Avatar
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    Quote Originally Posted by fkarkvan View Post
    I never knew that, thanks for the info.
    But ofcourse.
    2014 Ford Fiesta ST

    06 WRX, HAWKEYE # 001 <T-boned and sold>

    COILOVER TABLE
    TURBO TABLE

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